Dish-washing machine.



C. N. CLARK.

DISH WASHING MACHINE.

APPLICATION FILED SEPT. 24. 1915.

11755340- Patend Mar. 14,1916.

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'DISH WASHING MACHINE.

APPLICMION msn SEPT.24,1915.

1,175,340. Patented Mar. 11,1916.

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C. N. CLARK.

DISH WASHING MACHINE.

APPLICATION FILED SEPT. 24. |915.

1, 175,340. Patented Mar. 14, 1916.

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UNITED STATES PATENT oFFroE.

JHARLIE N. CLARK, oF MINNEAPOLIS, MINNESOTA, Ass-IGNoR To TWIN CITY`DISH` WASHERCOMPANY, OF MINNEAPOLIS, MINNESOTA, A CORPORATION OF MINNE-i SOTA.

DISH-WASHING MACHINE.

Application filed September 24, 1915. Serial No, 52,437.

To all 'iv/1.0m it 'may capccrn:

' Be it known that I, Ciiannin N. CLARK, a citizen of the United States,residing at Minneapolis, in the county of Hennepin and State of.Minnesota, have invented c'ertainnew and 'useful Improvements in-Dish-Washing Machines; and Ildo hereby de-V clare. the following to be afull, clear, and exact description of the.l invention, such as willenable others' skilled inthe art to which it appertains 'to make andilse the same.

My invention has forits object to pro'- ide an extremelysimple andhighly effient dish washing machine; and to such generally stated, vtheinvention conlsis'ts of the novel devices and combinations ofdeviceshereinafter described and defined This improved disi washer isefficient,

when made ofthe propersize, for washing dishes in hotels andrestaurants, but is of such a I character that it -is especially welladapted, when made in smaller sizes, fornse as adish washer in thefamily kitchen. In the Iaccompanying drawings which illustrate theinvention, like'charactersin- I d icate like -par'ts throughout` theseveral is a transverse section taken on th" views. l Y 'x Referringto,r the drawings: Figure 1 is a. vertical section taken longitudinally'..throngh the improved disliava'sliiirgmawgofFig.-1; Figf is a detailtakendn section, approximately on the line m3 m ofFig. 1; Fig. 4 is aplanview showing a` arrangement of the dish washing machine and powerconnections for `driving the same; and Fig. 9i's a' fragmentary Viewv invertical section, showing the form of the so-called water dasher,preferably'used in connection lwith the power machine.

Referring first to the construction shown in Figs. 1 to 7, inclusive,the numeral 1 indicates a. tank, preferably made ot galvanized sheetmetal approximateli1 rectan- 'gular in horizontal crossl section, but inits bottom having an inclined section 2 and a of the pan S.

Specification of Letters Patent. Patented Iain 14, 1916. i

depressed section 3which latter is adapted to contain the waterapproximately t0 a level indicated at y on Fig. 1. This lower y portion3 has a drain port 4 shown as normally closed by a stopper 5.

jacent to the lower portion of the inclined bottom section 2, but spacedfrom the sides of the tank, as bestshown in' Fig. 2, to

afford clearance for 'the laterally spaced arms 7 of a so-called waterdasher.' the bottom of which is in the form of 'a rectangular pan 8having a multiplicity of compartments formed between transverse parti-Vtions. The saidV pan portion." 8v of the so The numeral 6 indicates abox-like struc.

ture secured on the depressed bottom 3 addasher, it will be noted,normally lies on f the depressed bottom 3 with itsupper portion slightlylbelow the normal water level y, so that its compartments will be-filledwith water.` .l p

That portion of the'ltop the tank 1 which directly overlies the inclinedbottom lsection 2, is in the form o ,Qareinovable Vcover 1Q shown asprovided with a suitable hand piece 11, by means of which it may bereadily removed and applied.-7 w.That poi'- Vtion of the top of thetank'1 iivl'iichjoverlies the depressed bottoni 3 and 'vis midwaybetween the sides ofthe tank, is provided with a longitudinal channel,preferably formed in a raised sheet metal gnide12.

In the hand-operated machinethe dasher 8 is arranged"to bev ol'ieratedby a. hand piece 13 ha ving a stem or rod 14 that works freelyin theguide 19., and at its lower end,-

is pivotally attached `to the free edge flange Here it may beAstated'that the box-like section 6 is used-simply for the purpose ofreducing the amount'of water that iii-ust be contained in the tank -inorder to insure filling ofthe compartments of the dasher 8.

lRigidly secured to the sides of the tank 1, justabove the inclinedbottom2, are tray supporting brackets 15, the upper surfaces of whicharelevel and project inward from the sides of the tank, so that they areadapted to support holding trays, such as shown l in Figs` 4 to 7,inclusive. -for example.

The dish supporting trayshoavn inlFi'gsj. 4 and 5. comprises a.rectangixflalffmglrginal frame 1G having pe'riiianent longitudinal shits17- and reniovahle ohliquely set-,f transverse spacing bars 1S. the endsof which 7110 latter are seated in notches cut in the side bars of theframe 16. The dishes are adapted to be held between the Spacing bars 18.For ordinary dishes, the slats would alll be applied as shown in Fig. 4,but for deeper dishes, one or more of the said spacing bars ,may beremoved. It is important to note that the said spacing bars 18 are settransversely oblique to the sidesuof the tray and are also tiltedbackward in respect to the vertial.- This' vis important, because whenthe tray is applied on thesupporting brackets 15, as shown in Fig. 1,the dishes y1, indicated by dotted lines in Fig. 1, will be tilted andset oblique to the' longitudinal axis of the tank, so that when water isthrown against the dishes, as presently de-A their free upper ends inposition to engage i thel side bars or legs 7 of the dasher.

To hold back the solid particleswashed from the dishes, a strainer inthe'forin of a wire screen plate 20 is Vplaced on thev lower portion ofthe inclined deck or bottom sec- .'tion' 2 and is extended from sidetoside of the tank` Preferably, this strainer or straining partition 20,at its ends, is detachably sea ted in'channel-sliaped keepers 21 securedon the sides of the tank vand to the ends of the brackets 15. The tray16, at its ends, is shown as provided with baildke handles 22, by meansof which it'may be readily lifted to and from working position andcarried `from place to place with its load of dishes.

In Figs. 6 and "lf-lfhave shown a rack or tray for holdi'i'igcups y2.This rack, which isiridicateL/as anv entirety, by the numeral 23, is eupof horizontally spaced boards, cndp ates and connecting bars or slatsinter,- posed to afford Aentrance passages 24, through which the..v cupsmay be inserted and removed. This-rack, like the dish sup porting rack,is adapted t be placed on the supporting brackets 15'with the open facesof the `cups exposed to the direct dashing action of ,the water thrownup by th'edasher.

As is evident, theimpro\ed dish vwasher will operate with a very smallamount of hot water, inasmuch *i as l it requires only a little morethan enough to cover 'the so-called dasher when itis in its normal orlowered position. -This is a'r feature of especially E; great importanceAfor a dish washer designed -crank rod 30, the lower 'end of which isforroidiiiary kitchen use where' the number' of dishes to be washed iscomparatively small.

For hotel and restaurant use, the washer may be `made in appropriatesizes and they may be connected induplic'ate, as shown in Fig. 8,wherein two of the tanks above del scribed are placed,end to end, andare siip ported by a framework 25. In thisv frame-- work 25 is a countershaft -26 which may be driven by a belt. not shown, running over apulley27 on the said shaft. This shaft 26 is shown as provided with acombined fly wheel and crank 28, the crank pin 29 of which is connectedto the upper end of a guided forA vertical movements by a slottedv bar31 secured to the framework 25.` The lower end of this crank rod`30'is'provided with a wrist pin 32 that is connected to the upper endsof two dasher rodsv 33,v that work through the slotted guides 12 of thetanks,

and the lower ends of which are connected, one to the free portion ofeach of the two dashers 8 that -work within the saidtanks` In ahand-operated machine, in the operation of the dasher, suicient time maybe al-` lowed for the Acompartments ofthe dasher' i to properly tillwith water but in the power operated machine, where the Vdashers aregiven positively timed movements,- it is desii'able to provide the watercontaining compartinents of the d'asher witlihinged bot-4 toni plates34- having limited downward g 10Q and hlvingtheii' upward-movementslimitedA 1 movements indicatedby full lines in Fig. 9,I

by ,stop lugsr lips 35 :formed o'n-the sides of thedasher. With t-h`eldasherl thus constructed, when it is thrown downward-into 105.

the water, the hinged bottom plates 34 willv rise and permit thecompartments to quickly till with water, and uiiderfupward movements ofthe dasher the water willbe thrown from the compartments against thedasher. substantially insthe saine manneras when the dasher isoperatediby hand. Here it may be noted that'the pinionspo'f the dasherare inclined slightly backward toy facilitate the discharge -of thewater when the dasher is brought to a stop against the buffer springs19.

For the purpose of definitionythe coinpartinent inSwhich thetray ortrays'are-applied, is treated as the washing compartment and thereceptacle at the Ibottoni of the tank in which the dasher is normallysubmerged, is treated as the water'compartment.

What I claim is:

1. In a washing machine, a tank adapted' to contain water and havingdish-holdingV means arranged to support the dishes-above the watercontained therein, in combina-- tion with a dasher in the form of ashallow water receptacle normally resting adjacent to the bottom of saidtank, immersedA in the

